Signal transmission method and device

Abstract

The invention discloses a signal transmission method and device, and relates to the field of communication. The OOK modulation module is used for improving signal coverage and spectrum efficiency when the LP-WUS uses OOK modulation; the signal transmission method comprises the steps that firstly, a signal in a first time unit is generated, the signal at least comprises a first part and a second part, a first waveform sequence of ON modulation symbols of on-off keying of the first part is the same as a second waveform sequence of ON modulation symbols of on-off keying of the second part, or the first waveform sequence of ON modulation symbols of on-off keying of the second part is the same as the second waveform sequence of ON modulation symbols of on-off keying; the first waveform sequence and the second waveform sequence are dual; the signal is then transmitted within the first time unit.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a signal transmission method and device. Background Art

[0002] In order to reduce the power consumption of the terminal, a separate low-power small circuit (relative to the main receiver) can be used to receive paging and other information. The small circuit can be called a wake-up circuit, a low-power circuit or other names. The signal received by the wake-up circuit can be called a wake-up signal (WUS) / wake-up radio (WUR). The wake-up circuit refers to a wireless communication station that only turns on an ultra-low power wake-up receiver (Low Power WUR, LP-WUR) to listen for wake-up packets when the communication main module is in deep sleep. The wake-up packet generally carries a low-power wake-up signal (LP-WUS). In order to reduce the power consumption of the wake-up circuit, on-offkeying (OOK) is usually used to modulate the wake-up signal.

[0003] Currently, when LP-WUS uses OOK modulation, the adjusted signal coverage is poor and the spectrum efficiency is low. Summary of the invention

[0004] The present application provides a signal transmission method and device for improving the signal coverage and spectrum efficiency when LP-WUS uses OOK modulation.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, a signal transmission method is provided, the method comprising: first generating a signal within a first time unit, the signal comprising at least a first part and a second part, a first waveform sequence of ON modulation symbols of on-off keying of the first part and a second waveform sequence of ON modulation symbols of on-off keying of the second part being the same, or the first waveform sequence and the second waveform sequence being dual; and then sending the signal within the first time unit.

[0007] In the first aspect, by generating a plurality of ON modulation symbols with the same or dual waveform sequences within a time unit and performing coherent combining processing on the signal, a coherent combining gain is introduced, signal coverage is enhanced, and spectrum efficiency is improved.

[0008] In a possible implementation, the first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol in the first time unit; or, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols in the first time unit.

[0009] In a possible implementation, the signal is sent to the terminal, and the signal is used to wake up the terminal to receive an idle state paging message or to receive connected state data.

[0010] In a second aspect, a signal transmission method is provided, comprising: first receiving a signal within a first time unit; wherein the signal comprises at least a first part and a second part, a first waveform sequence of ON modulation symbols of on-off keying of the first part and a second waveform sequence of ON modulation symbols of on-off keying of the second part are the same, or the first waveform sequence and the second waveform sequence are dual; and then demodulating the signal.

[0011] In the second aspect, a signal having the same or dual waveform sequences of multiple ON modulation symbols generated within a time unit is demodulated, thereby improving signal coverage and spectrum efficiency.

[0012] In a possible implementation, the first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol; or, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols.

[0013] In a possible implementation, demodulating a signal includes: combining signals of different segments in a first part and a second part to obtain a plurality of combined signals; determining a target combined signal from the plurality of combined signals; and determining a bit sequence corresponding to the target combined signal as a demodulation result of the signal.

[0014] In a third aspect, a signal transmission device is provided, and the communication device can be a network device or a chip or system on chip in the network device. The communication device can implement the functions performed by the network device in the first aspect or the possible design of the first aspect, and the functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device includes: a processing module for generating a signal within a first time unit, wherein the signal includes at least a first part and a second part, the first waveform sequence and the second waveform sequence are the same, or the first waveform sequence and the second waveform sequence are dual, the first waveform sequence is a waveform sequence of ON modulation symbols of the on-off keying of the first part, and the second waveform sequence is a waveform sequence of ON modulation symbols of the on-off keying of the second part; a transceiver module for sending a signal within the first time unit.

[0015] In a possible implementation, the first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol in the first time unit; or, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols in the first time unit.

[0016] In a possible implementation, the signal is sent to the terminal, and the signal is used to wake up the terminal to receive an idle state paging message or to receive connected state data.

[0017] In a fourth aspect, a signal transmission device is provided, and the communication device can be a terminal or a chip or system on chip in the terminal. The communication device can implement the functions performed by the terminal in the above-mentioned first aspect or the possible design of the first aspect, and the functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. For example: the communication device includes: a transceiver module for receiving a signal within a first time unit; wherein the signal includes a first part and a second part, the first waveform sequence and the second waveform sequence are the same, or the first waveform sequence and the second waveform sequence are dual, the first waveform sequence is a waveform sequence of ON modulation symbols of the first part, and the second waveform sequence is a waveform sequence of ON modulation symbols of the second part; a processing module for demodulating the signal.

[0018] In a possible implementation, the first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol; or, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols.

[0019] In one possible implementation, the processing module is specifically used to: merge signals of different segments in the first part and the second part to obtain multiple merged signals; determine a target merged signal from the multiple merged signals; and determine a bit sequence corresponding to the target merged signal as a demodulation result of the signal.

[0020] In a fifth aspect, the present application provides a communication device, the communication device including a processor and a transceiver, the processor and the transceiver are used to support the communication device to execute the method of the first aspect or the second aspect. Further, the communication device may also include a memory, the memory stores computer instructions, and the processor can execute the computer instructions to execute the method of the first aspect or the second aspect.

[0021] In a sixth aspect, the present application provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed, the method of the first aspect or the second aspect is executed.

[0022] In a seventh aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method of the first aspect or the second aspect described above.

[0023] In an eighth aspect, the present application provides a chip comprising a processor and a transceiver, wherein the processor and the transceiver are used to support a communication device to execute the method of the first aspect or the second aspect.

[0024] Among them, the beneficial effects described in the third to eighth aspects of the present application can refer to the analysis of the beneficial effects of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the working state of a wake-up receiver provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of an OOK modulation waveform provided in an embodiment of the present application;

[0027] Figure 3a It is a schematic diagram of the real part of the OOK signal;

[0028] Figure 3b It is a schematic diagram of the imaginary part of the OOK signal;

[0029] Figure 3c It is a schematic diagram of the amplitude of the OOK signal;

[0030] Figure 4 A schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0031] Figure 5 A schematic diagram of a flow chart of a signal transmission method provided in an embodiment of the present application;

[0032] Figure 6 A waveform diagram of a signal provided in an embodiment of the present application;

[0033] Figure 7 A waveform diagram of another signal provided in an embodiment of the present application;

[0034] Figure 8 A waveform diagram of another signal provided in an embodiment of the present application;

[0035] Fig. 9 A schematic diagram of a flow chart of another signal transmission method provided in an embodiment of the present application;

[0036] Fig.10 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0037] Fig.11 A schematic diagram of the structure of another communication device provided in an embodiment of the present application;

[0038] Fig.12 A schematic diagram of the structure of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0040] It should be noted that the terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0041] It should be understood that in the embodiments of the present application, "at least one (item)" refers to one or more, "multiple" refers to two or more, "at least two (items)" refers to two or three and more than three, and "and / or" is used to describe the association relationship of the associated objects, indicating that there can be three relationships. For example, "A and / or B" can represent: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following (items)" or similar expressions refers to any combination of these items, including any combination of single items (items) or plural items (items). For example, at least one of a, b or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple. It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A. For example, B can be determined based on A. It should also be understood that determining B based on A does not mean determining B based only on A, but B can also be determined based on A and / or other information. In addition, the "connection" in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any limitation on this.

[0042] Unless otherwise specified, the "transmission" (transmit / transmission) appearing in the embodiments of the present application refers to bidirectional transmission, including sending and / or receiving actions. Specifically, the "transmission" in the embodiments of the present application includes the sending of data, the receiving of data, or the sending of data and the receiving of data. In other words, the data transmission here includes uplink and / or downlink data transmission. Data may include channels and / or signals, uplink data transmission is uplink channel and / or uplink signal transmission, and downlink data transmission is downlink channel and / or downlink signal transmission. The "network" and "system" appearing in the embodiments of the present application express the same concept, and the communication system is the communication network.

[0043] Before introducing the embodiments of the present application, some terms involved in the embodiments of the present application are explained.

[0044] Wake-up radio: The concept of wake-up radio means that when the communication main module is in deep sleep, the wireless communication station only turns on an ultra-low power wake-up receiver LP-WUR to listen for wake-up instructions. The wake-up instructions are generally carried in the low power wake-up signal LP-WUS. The working state of LP-WUR has two working states: State 1 and State 2. Figure 1 As shown, the two states are:

[0045] State 1: The terminal's LP-WUR is powered on and receiving or monitoring LP-WUS.

[0046] State 2: The LP-WUR receiver is in sleep mode and is not monitoring or receiving LP-WUS signals.

[0047] Typically, when the terminal's main receiver completes data transmission and reception and returns to an idle state, the main receiver can enter an ultra-low power state (Ultra-deep sleep, also known as ultra-deep sleep mode) or shut down completely to reduce power consumption. At this time, the LP-WUR receiver can continue to work in state1 or periodically work in state1. When the LP-WUR detects that the LP-WUS carries a wake-up indication corresponding to the terminal, the terminal will wake up the main receiver. When the terminal's main receiver starts working, the terminal can optionally turn off the LP-WUR receiver (LP-WUR is in state2).

[0048] Typically, as another example, when the main receiver of the terminal is turned on, LP-WUR can also be turned on to monitor LP-WUS. At this time, the main receiver usually does not detect other channels or signals with higher monitoring power consumption, such as PDCCH. When LP-WUR detects that the wake-up indication of the terminal is carried on LP-WUS, the main receiver starts to monitor the higher power consumption channel or signal, such as PDCCH.

[0049] Among them, the main receiver (main receiver or main radio, communication main module, also known as main circuit) is a traditional receiver of the new wireless / new air interface (New Radio, NR) terminal equipment, which is used to receive NR downlink signaling, signals and data, etc.; LP-WUR can also be called a wake-up circuit, a communication auxiliary module, an auxiliary circuit, etc. The main radio includes both the mid-RF module and the baseband processing module, while the LP-WUR may only include a simple receiver composed of a mid-RF module, or the LP-WUR uses a lower power module (the rate and bandwidth of the LP-WUS signal are much lower than the usual NR data, and a low-power module can be used instead), which makes the working power consumption of the LP-WUR much lower than that of the main radio. For example, the power consumption of the LP-WUR in the working state is only less than one-tenth of the average power consumption of the main radio in idle mode. As an example, the main receiver and the LP-WUR receiver can be different chips; or the main receiver and the LP-WUR are different parts of the same chip; or the main receiver and the LP-WUR receiver reuse some modules in the same chip, without restriction.

[0050] The LP-WUS introduced above can be a general term, including two aspects:

[0051] 1) Synchronization signal (Low power synchronization signal, LP-SS): The synchronization signal can be sent periodically or non-periodically. It mainly provides time synchronization function and / or frequency synchronization function for LP-WUR, so that LP-WUR can determine the frame, subframe, time slot, symbol, etc. of the current time, determine whether it is within the coverage of the cell, and correct the time and / or frequency offset of the local clock.

[0052] 2) Wake-up signal: used to wake up a specific UE or a group of UEs, triggering the UE to perform certain operations, including but not limited to updating system messages, receiving paging messages, initiating random access, receiving disaster warning information, etc.

[0053] When transmitting signals based on LP-WUR, on-off keying (OOK) combined with Manchester coding is usually used for signal processing. Specifically, during signal processing, the energy of two OOK symbols is compared to determine whether bit 1 or bit 0 is transmitted. And within the time span of an orthogonal frequency division multiplexing (OFDM) symbol, multiple OOK symbols / segments are carried.

[0054] OOK is the simplest form of amplitude-shift keying (ASK) modulation, which represents information by the presence or absence of a signal: for example, the presence of a signal (ON) during the signal sampling time represents a bit value of 1, and the absence of a signal (OFF) during the signal sampling time represents a bit value of 0. Figure 2 As shown in the figure, as an example, a total of 24 samples are sent and every 12 samples (the number of samples in each OOK symbol is N, in this example N = 12) represent a coded bit, where the first 12 samples have a sent signal (in the figure, 1 is sent), indicating on, and coded as 1; the last 12 samples have no sent symbol, indicating off, and coded as 0. Figure 2 In the example, if the normalized energy in the first OOK symbol is close to 1, it is determined to be bit1; if the normalized energy in the second OOK symbol is close to 0, it is determined that the bit it carries is bit0.

[0055] As an example, the 12 sample ON symbols and the 12 sample OFF symbols together constitute a 24-point sample sequence, which can be modulated by DFT-s-OFDM, mapped into more time domain samples and then transmitted as a signal through the RF system. As an example, in DFT-s-OFDM modulation, the N=24 time domain samples are transformed to the frequency domain by N=24-point DFT, mapped to N REs, and then transmitted after CP-OFDM modulation. The N can take other values, typically, such as 144 (corresponding to 12RB bandwidth) or 60 (corresponding to 5RB bandwidth).

[0056] The above-mentioned DFT-s-OFDM modulation method is only used as an example. Other methods can also be used to convert N sample points in the time domain into the frequency domain and then modulate and send them through the CP-OFDM method; or directly interpolate to the number of sample points of FFT-size (for example, 2048 or 4096), add a cyclic pre-CP and then send them.

[0057] The sending mentioned here includes transmitting the baseband signal through a radio frequency system or a radio frequency module.

[0058] The above-mentioned simple modulation characteristics of the OOK signal enable the receiver to obtain the transmitted signal only through energy detection. For example, in the first OOK symbol, once the received signal energy detected by the UE exceeds a certain threshold, it can be considered that the base station has sent the coded bit1. In the second OOK symbol, once the received signal detected by the UE does not exceed a certain threshold, it can be considered that the base station has not sent a signal, which can be represented as coded bit0.

[0059] The simple modulation characteristics of OOK make it possible to demodulate and receive OOK signals using simple devices, so it is more suitable as a modulation method for low power-wake up signals (LP-WUS). For receiving OOK signals, the envelope detection (ED) method is generally used. The main method of envelope detection is to detect the amplitude or energy of the signal. As an example, for the complex sequence after sampling the received signal, the real part of each sampling point in the signal is as follows: Figure 3a As shown, the imaginary part of each sampling point in the signal is Figure 3b As shown, its amplitude is The final envelope is Figure 3c shown.

[0060] Manchester coding uses two (or more) consecutive different levels (envelopes) to represent a bit. As shown in Table 1, 1 / 2 Manchester coding (encodes one information into two symbols). The advantage of Manchester coding is that when the UE receives the signal, it can directly compare the two symbols before and after the coding to perform decoding. For example, for 1 / 2 Manchester coding, if the envelope level of the first symbol is less than the second symbol (for example, the coded information on the corresponding two OOK symbols is 01), it can be determined that the information bit carried by the two OOK symbols is 1. If the envelope level of the first symbol is greater than the second symbol (for example, the coded information on the corresponding two OOK symbols is 10), the information bit carried by the two OOK symbols is 0. It can be seen that Manchester coding does not need to perform threshold judgment on the two symbols separately (that is, compare the envelope level of each symbol with the threshold separately) to determine the information bit carried, and the demodulation and reception algorithms are relatively simple, and the performance is also improved.

[0061] Table 1

[0062]

[0063] At present, due to the poor signal coverage of LP-WUS, if the LP-WUS signal based on OOK modulation is to meet certain coverage target requirements, such as the coverage of the Msg3 physical uplink shared channel (PUSCH), more repetitions are required, which reduces the data rate of LP-WUS and also reduces the spectrum efficiency of LP-WUS transmission.

[0064] In order to solve the above technical problems, an embodiment of the present application provides a signal transmission method. The method provided by the embodiment of the present application is described below in conjunction with the drawings in the specification.

[0065] The communication method provided in the embodiment of the present application can be applied to various communication systems, for example, the communication system can be a fourth generation (4G) communication system (such as a long term evolution (LTE) system), a fifth generation (5G) communication system, a worldwide interoperability for microwave access (WiMAX) or a wireless local area network (WLAN) system, or a fusion system of multiple systems, or a future communication system, such as a 6G communication system. Among them, the 5G communication system can also be called a new radio (NR) system.

[0066] The communication method provided in the embodiments of the present application can be applied to various communication scenarios, for example, it can be applied to one or more of the following communication scenarios: enhanced mobile broadband (eMBB), ultra-reliable low latency communication (URLLC), machine type communication (MTC), massive machine type communication (mMTC), device to device (D2D), vehicle to everything (V2X), vehicle to vehicle (V2V), and Internet of things (IoT), etc.

[0067] Below Figure 4Taking the communication system shown as an example, the communication method provided in the embodiment of the present application is described.

[0068] Figure 4 is a simplified schematic diagram of a communication system provided in an embodiment of the present application. Figure 4 As shown, the communication system includes a wireless access network 100. The wireless access network 100 may be a next generation (e.g., 6G or higher) wireless access network, or a traditional (e.g., 5G or 4G) wireless access network. One or more communication devices (120a-120j, collectively referred to as 120) may be connected to each other or to one or more network devices (110a, 110b, collectively referred to as 110) in the wireless access network 100. Figure 4 This is just a schematic diagram. The communication system may also include other devices, such as core network devices, wireless relay devices and / or wireless backhaul devices. Figure 4 Not drawn in.

[0069] For example, in practical applications, the communication system may include multiple network devices (also referred to as access network devices) at the same time, or may include multiple communication devices at the same time. A network device may serve one or more communication devices at the same time. A communication device may also access one or more network devices at the same time. The embodiment of the present application does not limit the number of communication devices and network devices included in the communication system.

[0070] The network device may be an entity on the network side for transmitting or receiving signals. The network device may be an access device for a communication device to access the communication system in a wireless manner, such as a base station. The base station can broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), access network equipment in open radio access network (O-RAN), relay station, access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), master station MeNB, secondary station SeNB, multi-standard wireless node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), radio unit (RU), centralized unit control plane (CU control plane, CU-CP) node, centralized unit user plane (CU The base station may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The network device may also refer to a communication module, a modem or a chip that is arranged in the aforementioned device or apparatus. The network device may also be a mobile switching center and a device that performs the base station function in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network side device in a 6G network, and a device that performs the base station function in future communication systems. The network device may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0071] The network equipment may be fixed or mobile. For example, the base stations 110 a and 110 b are stationary and are responsible for wireless transmission and reception in one or more cells from the communication device 120 . Figure 4 The helicopter or drone 120i shown in the figure can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station 120i. In other examples, the helicopter or drone (120i) can be configured to be used as a communication device for communicating with the base station 110b.

[0072] In the embodiment of the present application, the signal transmission device for implementing the above access network function may be an access network device, or a network device having some functions of accessing the network, or a device capable of supporting the implementation of the access network function, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module, and the device may be installed in the access network device or used in combination with the access network device. In the method of the embodiment of the present application, the signal transmission device for implementing the access network device function is described as an access network device.

[0073] A communication device can be an entity on the user side that is used to receive or transmit signals, such as a mobile phone. Communication devices can be used to connect people, objects, and machines. Communication devices can communicate with one or more core networks through network devices. Communication devices include handheld devices with wireless connection functions, other processing devices connected to wireless modems, or vehicle-mounted devices. Communication devices can be portable, pocket-sized, handheld, built-in computer, or vehicle-mounted mobile devices. The communication device 120 can be widely used in various scenarios, such as cellular communication, device-to-device D2D, vehicle-to-everything (V2X), point-to-point (P2P), machine-to-machine (M2M), machine type communication (MTC), Internet of Things (IOT), virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery and mobility, etc.Some examples of communication devices 120 are: user equipment (UE) of the 3rd generation partnership project (3GPP) standard, fixed equipment, mobile devices, handheld devices, wearable devices, cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal computers, smart books, vehicles, satellites, global positioning system (GPS) devices, target tracking devices, drones, helicopters, aircraft, ships, remote control devices, smart home devices, industrial equipment, personal communication service (PCS) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), wireless network cameras, tablet computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, terminals in Internet of Vehicles systems, wireless terminals in self-driving, smart grids (smart The communication device 120 may be a wireless terminal in the above various scenarios or a device for being set in a wireless device, for example, a communication module, a modem or a chip in the above device. The communication device may also be referred to as a terminal, a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc. The communication device may also be a communication device in a future communication system. The communication device may be used in a dedicated network device or a general device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the communication device.

[0074] Exemplarily, the communication device may be used to act as a base station. For example, the UE may act as a scheduling entity that provides sidelink signals between UEs in V2X, D2D, or P2P, etc. Figure 4As shown, the cell phone 120a and the car 120b communicate with each other using a sidelink signal. The cell phone 120a and the smart home device 120e communicate with each other without relaying the communication signal through the base station 110b.

[0075] In an embodiment of the present application, the signal transmission device for realizing the functions of the communication device may be a terminal device, or a terminal device having some functions of the above communication device, or a device capable of supporting the functions of the above communication device, such as a chip system, which may be installed in the terminal device or used in combination with the terminal device. In an embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. In the technical solution provided in an embodiment of the present application, the signal transmission device is described as a terminal device or UE.

[0076] Exemplarily, a communication system is usually composed of cells, and a base station provides management of the cells. The base station provides communication services to multiple mobile stations (MS) in the cells. The base station includes a baseband unit (BBU) and a remote radio unit (RRU). The BBU and RRU can be placed in different places, for example: the RRU is remote and placed in an area with high traffic volume, and the BBU is placed in a central computer room. The BBU and RRU can also be placed in the same computer room. The BBU and RRU can also be different components under one rack. Exemplarily, a cell can correspond to a carrier or a component carrier.

[0077] It can be understood that the embodiments of the present application can be applied between a network device and a communication device, between a network device and a network device, or between a communication device and a communication device, that is, between a primary device and a secondary device. The primary device can be a network device or a communication device. When the primary device is a network device, the secondary device can be another network device or a communication device. When the primary device is a communication device, the secondary device can be another communication device.

[0078] The following describes the scheme by taking the master device as a network device, such as an access network device, and the slave device as a communication device, such as a terminal device, as an example. The communication direction corresponding to the downlink is the transmission from the master device to the slave device, and the communication direction corresponding to the uplink is the transmission from the slave device to the master device.

[0079] Protocol layer structure between access network equipment and terminal equipment

[0080] The communication between the access network device and the terminal device follows a certain protocol layer structure. The protocol layer structure may include a control plane protocol layer structure and a user plane protocol layer structure. For example, the control plane protocol layer structure may include the functions of the protocol layers such as the radio resource control (RRC) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, the medium access control (MAC) layer and the physical layer. For example, the user plane protocol layer structure may include the functions of the protocol layers such as the PDCP layer, the RLC layer, the MAC layer and the physical layer. In a possible implementation, the service data adaptation protocol (SDAP) layer may also be included above the PDCP layer.

[0081] Exemplarily, the protocol layer structure between the access network device and the terminal may also include an artificial intelligence (AI) layer for transmitting data related to AI functions.

[0082] Taking data transmission between access network equipment and terminal equipment as an example, data transmission needs to pass through the user plane protocol layer, such as the SDAP layer, PDCP layer, RLC layer, MAC layer, and physical layer. Among them, the SDAP layer, PDCP layer, RLC layer, MAC layer, and physical layer can also be collectively referred to as the access layer. According to the transmission direction of the data, it is divided into sending or receiving, and each of the above layers is divided into a sending part and a receiving part. Taking downlink data transmission as an example, after the PDCP layer obtains data from the upper layer, it transmits the data to the RLC layer and the MAC layer, and then the MAC layer generates a transmission block, and then transmits it wirelessly through the physical layer. The data is encapsulated accordingly in each layer. For example, the data received by a layer from the upper layer of the layer is regarded as the service data unit (SDU) of the layer, which becomes a protocol data unit (PDU) after being encapsulated by the layer, and then passed to the next layer.

[0083] Exemplarily, the terminal device may also have an application layer and a non-access layer. The application layer may be used to provide services to applications installed in the terminal device. For example, the downlink data received by the terminal device may be sequentially transmitted from the physical layer to the application layer, and then provided to the application by the application layer; for another example, the application layer may obtain the data generated by the application, and sequentially transmit the data to the physical layer, and send it to other signal transmission devices. The non-access layer may be used to forward user data, such as forwarding the uplink data received from the application layer to the SDAP layer or forwarding the downlink data received from the SDAP layer to the application layer.

[0084] Structure of access network equipment

[0085] The access network equipment may include a centralized unit (CU) and a distributed unit (DU). Multiple DUs may be centrally controlled by one CU. As an example, the interface between the CU and the DU may be referred to as an F1 interface. Among them, the control plane (CP) interface may be F1-C, and the user plane (UP) interface may be F1-U. The CU and DU may be divided according to the protocol layers of the wireless network: for example, the functions of the PDCP layer and above are set in the CU, and the functions of the protocol layers below the PDCP layer (such as the RLC layer and the MAC layer, etc.) are set in the DU; for another example, the functions of the protocol layers above the PDCP layer are set in the CU, and the functions of the protocol layers below the PDCP layer are set in the DU.

[0086] It is understandable that the above-mentioned division of the processing functions of CU and DU according to the protocol layer is only an example, and it can also be divided in other ways, for example, CU or DU can be divided into functions with more protocol layers, and for example, CU or DU can also be divided into partial processing functions with protocol layers. In one design, some functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. In another design, the functions of the CU or DU can also be divided according to the service type or other system requirements, for example, divided by latency, and the functions whose processing time needs to meet the latency requirements are set in the DU, and the functions that do not need to meet the latency requirements are set in the CU. In another design, the CU can also have one or more functions of the core network. Exemplarily, the CU can be set on the network side to facilitate centralized management. In another design, the RU of the DU is set remotely. Among them, the RU has a radio frequency function.

[0087] Exemplarily, DU and RU can be divided at the physical layer (PHY). For example, DU can implement high-level functions in the PHY layer, and RU can implement low-level functions in the PHY layer. Wherein, when used for sending, the functions of the PHY layer may include adding cyclic redundancy check (CRC) code, channel coding, rate matching, scrambling, modulation, layer mapping, precoding, resource mapping, physical antenna mapping, and / or RF transmission functions. When used for receiving, the functions of the PHY layer may include CRC, channel decoding, rate matching, descrambling, demodulation, layer mapping, channel detection, resource demapping, physical antenna demapping, and / or RF receiving functions. Wherein, the high-level functions in the PHY layer may include a part of the functions of the PHY layer, such as the part of the functions that is closer to the MAC layer, and the low-level functions in the PHY layer may include another part of the functions of the PHY layer, such as the part of the functions that is closer to the RF function. For example, the high-level functions in the PHY layer may include adding CRC code, channel coding, rate matching, scrambling, modulation, and layer mapping, and the low-level functions in the PHY layer may include precoding, resource mapping, physical antenna mapping, and RF transmission functions; or, the high-level functions in the PHY layer may include adding CRC code, channel coding, rate matching, scrambling, modulation, layer mapping and precoding, and the low-level functions in the PHY layer may include resource mapping, physical antenna mapping, and RF transmission functions.

[0088] Exemplarily, the functions of CU can be implemented by one entity, or can be implemented by different entities. For example, the functions of CU can be further divided, that is, the control plane and the user plane are separated and implemented by different entities, namely the control plane CU entity (i.e., CU-CP entity) and the user plane CU entity (i.e., CU-UP entity). The CU-CP entity and the CU-UP entity can be coupled with the DU to jointly complete the functions of the access network device.

[0089] In the above architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the terminal device can be sent to the CU through the DU. For example, the signaling of the RRC or PDCP layer will eventually be processed into the signaling of the physical layer and sent to the terminal device, or converted from the received signaling of the physical layer. In this architecture, the signaling of the RRC or PDCP layer can be considered to be sent through the DU, or through the DU and the RU.

[0090] Exemplarily, any of the above-mentioned DU, CU, CU-CP, CU-UP and RU can be a software module, a hardware structure, or a software module + hardware structure, without limitation. Among them, the existence forms of different entities can be different, without limitation. For example, DU, CU, CU-CP, CU-UP are software modules, and RU is a hardware structure. These modules and their execution methods are also within the scope of protection of the embodiments of the present application.

[0091] It should be understood that Figure 4 The number and type of each device in the communication system shown are for illustration only, and the embodiments of the present application are not limited thereto. In actual applications, the communication system may also include more terminal devices, more access network devices, and other network elements, such as core network devices, and / or network elements for implementing artificial intelligence functions.

[0092] It is understandable that all or part of the functions implemented by one or more of the terminal equipment, access network equipment, core network equipment, or network elements used to implement artificial intelligence functions can be virtualized, that is, implemented by one or more of the proprietary processors or general-purpose processors and the corresponding software modules. Among them, the terminal equipment and the access network equipment involve interfaces for air interface transmission, and the transceiver functions of the interfaces can be implemented by hardware. Core network equipment, such as operation administration and maintenance (OAM) network elements, can be virtualized. Exemplarily, one or more functions of the virtualized terminal equipment, access network equipment, core network equipment, or network elements used to implement artificial intelligence functions can be implemented by cloud devices, such as cloud devices in over the top (OTT) systems.

[0093] The method provided in the embodiment of the present application can be used for communication between access network equipment and terminal equipment, and can also be used for communication between other communication equipment, such as communication between macro base stations and micro base stations in a wireless backhaul link, and communication between two terminal devices in a side link (sidelink, SL), etc., without limitation.

[0094] Figure 5 FIG. 1 is a flow chart showing a signal transmission method according to an embodiment of the present application. Figure 5 As shown, the method may include the following steps:

[0095] S510, a network device generates a signal within a first time unit.

[0096] The first time unit may be the time of one or more symbols. Taking OOK modulation as an example, the first time unit corresponds to the time of one OOK symbol or multiple OOK symbols. The network device generates a signal within the first time unit. Figure 6 As shown, the signal includes at least a first part and a second part, and the waveform sequence of the ON modulation symbol of the on-off keying of the first part (the first waveform sequence) and the waveform sequence of the ON modulation symbol of the on-off keying of the second part (the second waveform sequence) are the same (or dual, Figure 6 The same situation is shown). For the case where the first waveform sequence and the second waveform sequence are dual, the first waveform sequence and the second waveform sequence may be conjugate to each other or negative to each other, and other dual relationships may also be defined without limitation. The waveform sequence in the embodiment of the present application may also be referred to as a waveform.

[0097] In the present invention, the waveform sequence corresponds to a waveform. For example, for an OOK modulation symbol, the corresponding waveform sequence includes a sequence of time domain sampling points obtained after alignment and time domain sampling, and each time domain sampling point corresponds to a complex value or an envelope value. Therefore, an OOK modulation symbol corresponds to a waveform sequence.

[0098] As an example, in the present invention, the waveform sequence corresponds to a time domain sample sequence from the perspective of the transmitter. One or more of the time domain sample sequences are spliced ​​as needed and sent after DFT-s-OFDM modulation. For example, for an OOK modulation symbol, its corresponding transmitter waveform sequence corresponds to the sample sequence before DFT of DFT-s-OFDM modulation, and each sample corresponds to a complex value. Therefore, an OOK modulation symbol corresponds to a transmission waveform sequence.

[0099] Without loss of generality, unless otherwise specified, the waveform sequence corresponding to an OOK symbol in the present invention may be a sampling point sequence at the transmitting end or a sampling point sequence at the receiving end.

[0100] In S510, the waveform sequence (first waveform sequence) of the ON modulation symbols of the on-off keying of the first part is the same as the waveform sequence (second waveform sequence) of the ON modulation symbols of the on-off keying of the second part, including that the sample point sequence corresponding to the ON modulation symbols of the first part and the sample point sequence corresponding to the ON modulation symbols of the second part are the same.

[0101] In S510, the waveform sequence of the ON modulation symbols of the on-off keying of the first part (the first waveform sequence) and the waveform sequence of the ON modulation symbols of the on-off keying of the second part (the second waveform sequence) have a dual relationship, including that the corresponding sample points in the sample point sequence corresponding to the ON modulation symbols of the first part and the sample point sequence corresponding to the ON modulation symbols of the second part are conjugate to each other or negative to each other.

[0102] Without loss of generality, in addition to being conjugate or negative of each other, the dual relationship also includes the case where corresponding samples in the sample point sequence corresponding to the first part ON modulation symbol and the sample point sequence corresponding to the second part ON modulation symbol can be mapped one-to-one.

[0103] In the embodiment of the present application, the signal in the first time unit includes the first part and the second part. In the specific implementation, the signal in the first time unit can also include more parts, and the signal transmission is performed based on the method provided in the embodiment of the present application without limitation.

[0104] The first part and the second part may be signals sent in the same orthogonal frequency division multiplexing symbol in the first time unit, such as Figure 7As shown, the first part includes Segment A and Segment B, Segment A and Segment B are in the 1st OFDM symbol, the sample sequence corresponding to Segment A is the first waveform sequence, and the first part is the signal sent in the 1st OFDM symbol in the first time unit; the second part includes Segment C and Segment D, Segment C and Segment D are also in the 1st OFDM symbol, the sample sequence corresponding to Segment C is the second waveform sequence, and the second part is also the signal sent in the 1st OFDM symbol in the first time unit. That is, the first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol in the first time unit. The first waveform sequence and the second waveform sequence correspond to the sample sequences corresponding to two OOK ON symbols in the first time unit, respectively. In this example, Segment A and Segment C correspond to OOK ON symbols in an OFDM symbol (first time unit), respectively. At this time, the sample sequence corresponding to Segment A and the sample sequence corresponding to Segment C are the first waveform sequence and the second waveform sequence, respectively. In other examples, for example, depending on the information transmitted by an OFDM symbol, the first OOK ON symbol corresponding to the first time unit may be one of (Segment A, Segment B), and the second OOK ON symbol may correspond to one of (Segment C, Segment D). At this time, the first waveform sequence and the second waveform sequence respectively correspond to the sample point sequences corresponding to the two OOK ON symbols.

[0105] Alternatively, the first part and the second part may also be signals sent in different orthogonal frequency division multiplexing symbols in the first time unit. Figure 8As shown, the first part corresponds to the 1st OFDM symbol, including Segment E and Segment F, Segment E and Segment F are in the 1st OFDM symbol, the sample sequence corresponding to the Segment E is the first waveform sequence, and the first part is the signal sent in the 1st OFDM symbol in the first time unit; the second part corresponds to the 2nd OFDM symbol, including Segment G and Segment H, Segment G and Segment H are in the 2nd OFDM symbol, the sample sequence corresponding to the Segment G is the second waveform sequence, and the second part is also the signal sent in the 2nd OFDM symbol in the first time unit. That is, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols in the first time unit. The first waveform sequence and the second waveform sequence correspond to the sample sequences corresponding to the two OOKON symbols in the first time unit, respectively. In this example, Segment E and Segment G correspond to the OOKON symbols in two OFDM symbols (first time unit), respectively. At this time, the sample sequence corresponding to Segment E and the sample sequence corresponding to Segment G are the first waveform sequence and the second waveform sequence, respectively. In other examples, for example, according to the different information transmitted in the first time unit (2 OFDM symbols), the first OOK ON symbol corresponding to the first time unit may be one of (Segment E, Segment F), and the second OOK ON symbol may correspond to one of (Segment G, Segment H). In this case, the first waveform sequence and the second waveform sequence correspond to the sample point sequences corresponding to the two OOK ON symbols, respectively. That is, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols in the first time unit. The example here uses two OFDM symbols to form the first time unit as an example, and the present invention also includes an example in which multiple OFDM symbols form the first time unit.

[0106] S520: The network device sends a signal to the terminal within the first time unit, and the terminal receives the signal accordingly.

[0107] Among them, after the network device generates the first signal in the first time unit, it sends a signal to the terminal in the first time unit. The signal can be used to wake up the idle terminal to receive a paging message, or to instruct a connected user to receive connected data. The network device can indicate the first time unit information to the terminal in a manner pre-agreed or configured with the terminal. Specifically, the first time unit information includes the length and position of the first time unit. The network device and the terminal can confirm the sending method of the first signal in the first time unit by an agreed or configured manner, for example, the signal included in the first time unit is sent based on the same antenna port or an antenna port with a quasi co-location (QCL) relationship.

[0108] S530, the terminal demodulates the signal.

[0109] After receiving the signal, the terminal can demodulate the signal. After demodulating the signal, the terminal can determine whether the signal carries the wake-up indication of the terminal, and determine whether the main receiver receives a paging message or receives connection state data according to the wake-up indication.

[0110] In an embodiment of the present application, by generating a signal with the same or dual waveform sequence of multiple ON modulation symbols within a time unit and performing coherent combining processing on the signal, a coherent combining gain is introduced, signal coverage is enhanced, and spectrum efficiency is improved.

[0111] In one embodiment, Fig. 9 As shown, S530 (terminal demodulation signal) may include:

[0112] S910, combining signals of different segments in the first part of the signal and the second part of the signal to obtain a plurality of combined signals.

[0113] Wherein, referring to the description of S510 and S520, the network device sends a first signal in a first time unit, and the signal received by the terminal in the first time unit includes a first part and a second part, the first part is further divided into a first part segment and a second part segment, and the second part is further divided into a third part segment and a fourth part segment. There are multiple merging possibilities for merging the segmented signal in the first part and the segmented signal in the second part, and multiple merged signals are obtained. The coherent merging is introduced below with reference to specific examples.

[0114] The terminal does not determine which segments in the first part of the signal and the second part of the signal correspond to the OOK ON symbol and which segments correspond to the OOK OFF symbol. By combining and demodulating the segmented signal in the first part and the segmented signal in the second part, the terminal can determine the coded bit sequence carried in the first time unit, and which segments in the first part and the second part of the signal correspond to the OOK ON symbol and which segments correspond to the OOK OFF symbol.

[0115] In fact, the waveform sequence of the ON modulation symbol of the first part is the first waveform sequence, the waveform sequence of the ON modulation symbol of the second part is the second waveform sequence, the waveform sequence of the OFF modulation symbol of the on-off keying of the first part is the third waveform sequence, and the waveform sequence of the OFF modulation symbol of the on-off keying of the second part is the fourth waveform sequence.

[0116] In one example, Figure 7 In the illustrated scenario, the first waveform sequence and the third waveform sequence correspond to Segment A and Segment B, respectively. The second waveform sequence and the fourth waveform sequence correspond to Segment C and Segment D, respectively. Coherent Combination Various coherent combinations of the first sequence and the second sequence may be as shown in Table 2.

[0117] Table 2

[0118]

[0119] In another example, Figure 8 In the scenario shown, the first waveform sequence and the third waveform sequence correspond to Segment E and Segment F, respectively. The second waveform sequence and the fourth waveform sequence correspond to Segment G and Segment H, respectively. The signals of different segments of the first part and the second part may be merged as shown in Table 3. It can be seen that Figure 7 Compared with the scenario shown, the number of possible combinations is the same for both (4). However, this number of possible combinations is limited to this example. Figure 8 The scenario shown is that the signals corresponding to the waveform sequences corresponding to the OOK symbols in different OFDM symbols are merged. Figure 7 The scenario shown is that the signals corresponding to the waveform sequences of different segments in the same OFDM symbol are merged. Figure 7 The scenes shown and Figure 8 The inconsistent number of segmented signals in the first part (and / or the inconsistent number of segments in the second part) between the scenes shown is very likely to lead to different numbers of merging results when the two are merged, which is not limited.

[0120] Table 3

[0121]

[0122] S920 , determining a target combined signal from the multiple combined signals in S910 .

[0123] The target merged signal can be determined based on the envelope energy values ​​of different merged signals (for example, a group of waveform sequence combinations with higher envelope energy values ​​are taken). When calculating the envelope energy value of each merged signal, the calculation algorithm can be flexibly set. For example, the envelope energy value can be calculated according to the square sum of the sample point modulus values, and the merged signal with the highest envelope energy value is determined as the target merged signal.

[0124] Exemplarily, the signal received by the terminal in the first time unit corresponds to M sampling points, and the signal received by the terminal is divided into four signal parts, each signal part corresponds to M / 4 sampling points. If M is 128, each signal part corresponds to 32 signal sampling points. Therefore, each merged signal part also corresponds to 32 signal sampling points. For each merged signal part used to merge the merged signal, the energy after the complex value corresponding to the corresponding 32 signal sampling points is squared and added as the envelope energy value of the merged signal. And the merged signal with the highest energy is used as the target merged signal.

[0125] As another example, the target combined signal may also be determined according to a correlation value between the combined signal and the local sequence.

[0126] S930: Determine a bit sequence corresponding to the target combined signal as a demodulation result of the signal.

[0127] After the target waveform sequence combination is determined, the bit sequence corresponding to the target waveform sequence combination can be determined as the demodulation result of the signal. Figure 7 In the scenario shown, the target waveform sequence combination is determined to be Segment A+Segment C, and 1010 is determined as the demodulation result of the signal.

[0128] In an embodiment of the present application, by generating a signal with the same or dual waveform sequence of multiple ON modulation symbols within a time unit and performing coherent combining processing on the signal, a coherent combining gain is introduced, signal coverage is enhanced, and spectrum efficiency is improved.

[0129] The above mainly introduces the scheme provided by the embodiment of the present application from the perspective of the execution logic of each step. It is understandable that each node, such as a network device, includes a hardware structure and / or software module corresponding to each function in order to realize the above functions. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiment disclosed herein, the method of the embodiment of the present application can be implemented in the form of hardware, software, or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0130] The embodiment of the present application can divide the functional modules of the network device according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0131] In specific implementation, each network element shown in this application, such as: network equipment can be used Fig.10 The structure shown may include Fig.10 Parts shown. Fig.10 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. When the communication device has the function of the network device described in the embodiment of the present application, the communication device can be a network device or a chip or system on chip in the network device. When the communication device has the function of the terminal described in the embodiment of the present application, the communication device can be a terminal or a chip or system on chip in the terminal.

[0132] like Fig.10 As shown, the communication device may include a processor 901, a communication line 902, a transceiver 903, and a memory 904. The processor 901, the memory 904, and the transceiver 903 may be connected via the communication line 902. In an example, the processor 901 may include one or more CPUs, such as Fig.10 CPU0 and CPU1 in.

[0133] As an optional implementation, the communication device includes multiple processors, for example, Fig.10 In addition to the processor 901, a processor 907 may also be included.

[0134] The processor 901 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 901 may also be other devices with processing functions, such as circuits, devices, or software modules.

[0135] The communication line 902 is used to transmit information between the components included in the communication device.

[0136] The transceiver 903 is used to communicate with other devices or other communication networks. The other communication networks may be Ethernet, radio access network (RAN), wireless local area network (WLAN), etc. The transceiver 903 may be an interface circuit, a pin, a radio frequency module, a transceiver or any device capable of achieving communication.

[0137] Furthermore, the communication device may also include a memory 904. The memory 904 is used to store instructions, wherein the instructions may be computer programs.

[0138] Among them, the memory 904 can be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage, magnetic disk storage medium or other magnetic storage device, and the optical disc storage includes a compressed optical disc, a laser disc, an optical disc, a digital versatile disc, or a Blu-ray disc, etc.

[0139] It should be noted that the memory 904 can exist independently of the processor 901, or can be integrated with the processor 901. The memory 904 can be used to store instructions or program codes or some data, etc. The memory 904 can be located in the communication device or outside the communication device, without limitation. When the processor 901 executes the instructions stored in the memory 904, the method provided in the embodiment of the present application can be implemented.

[0140] As an optional implementation, the communication device further includes an output device 905 and an input device 906. Exemplarily, the input device 906 is a device such as a keyboard, a mouse, a microphone or a joystick, and the output device 905 is a device such as a display screen and a speaker.

[0141] It should be noted that the communication device can be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system or a Fig.10 In addition, Fig.10 The structure shown in the figure does not constitute a limitation on the communication device, except Fig.10 In addition to the components shown, the communication device may include more or fewer components than shown, or combine certain components, or arrange the components differently.

[0142] In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices.

[0143] Fig.11 A structural diagram of a communication device 1100 is shown, and the communication device is applied to a network device. Fig.11 Each module in the device shown has the function of realizing Figure 5 and Fig. 9 The functions of the corresponding steps in the module can achieve the corresponding technical effects. The corresponding beneficial effects of each module execution step can be referred to Figure 5 and Fig. 9 The description of the corresponding steps is not repeated here. The functions can be implemented by hardware or by executing corresponding software through hardware. The hardware or software includes one or more modules corresponding to the above functions. The communication device can be a network device or a chip or system on chip in the network device. For example, the communication device includes:

[0144] The processing module 110 is used to generate a signal within a first time unit, wherein the signal includes at least a first part and a second part, the first waveform sequence and the second waveform sequence are the same, or the first waveform sequence and the second waveform sequence are dual, the first waveform sequence is a waveform sequence of ON modulation symbols of on-off keying of the first part, and the second waveform sequence is a waveform sequence of ON modulation symbols of on-off keying of the second part; the transceiver module 111 is used to send the signal within the first time unit.

[0145] In one embodiment, the first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol in the first time unit; or, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols in the first time unit.

[0146] In one embodiment, the signal is sent to the terminal, and the signal is used to wake up the terminal to receive an idle state paging message or to receive connected state data.

[0147] Fig.12 A structural diagram of a communication device 1200 is shown, and the communication device is applied to a terminal. Fig.12 Each module in the device shown has the function of realizing Figure 5 and Fig. 9 The functions of the corresponding steps in the module can achieve the corresponding technical effects. The corresponding beneficial effects of each module execution step can be referred to Figure 5 and Fig. 9 The description of the corresponding steps is not repeated here. The functions can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions. The communication device can be a terminal or a chip or system on chip in the terminal. For example, the communication device includes:

[0148] The transceiver module 120 is used to receive a signal within a first time unit; wherein the signal includes a first part and a second part, the first waveform sequence and the second waveform sequence are the same, or the first waveform sequence and the second waveform sequence are dual, the first waveform sequence is a waveform sequence of ON modulation symbols of the first part, and the second waveform sequence is a waveform sequence of ON modulation symbols of the second part; the processing module 121 is used to demodulate the signal.

[0149] The embodiment of the present application also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by a computer program to instruct the relevant hardware, and the program can be stored in the above computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be a terminal device of any of the above embodiments, such as: an internal storage unit including a data sending end and / or a data receiving end, such as a hard disk or memory of a terminal device. The above computer-readable storage medium can also be an external storage device of the above terminal device, such as a plug-in hard disk equipped on the above terminal device, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. Further, the above computer-readable storage medium can also include both an internal storage unit of the above terminal device and an external storage device. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above terminal device. The above computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0150] The present application also provides a computer instruction. All or part of the process in the above method embodiment can be completed by computer instructions to instruct related hardware (such as computers, processors, network devices, and terminals, etc.). The program can be stored in the above computer-readable storage medium.

[0151] The embodiment of the present application also provides a chip system. The chip system can be composed of a chip, or can include a chip and other discrete devices, without limitation. The chip system includes a processor and a transceiver, and all or part of the processes in the above method embodiment can be completed by the chip system, such as the chip system can be used to implement the functions performed by the network device or terminal in the above method embodiment.

[0152] In one possible design, the above-mentioned chip system also includes a memory, which is used to store program instructions and / or data. When the chip system is running, the processor executes the program instructions stored in the memory so that the chip system performs the functions performed by the network device or terminal in the above-mentioned method embodiment.

[0153] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0154] In the embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing instructions and / or data.

[0155] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0156] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0157] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0158] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a device, such as: a single-chip microcomputer, a chip, etc., or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, ROM, RAM, disks, or optical disks.

[0159] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A signal transmission method, characterized in that: include: Generate a signal within a first time unit, wherein the signal includes at least a first part and a second part, the first waveform sequence and the second waveform sequence are the same, or the first waveform sequence and the second waveform sequence are dual, the first waveform sequence is a waveform sequence of ON modulation symbols of on-off keying of the first part, and the second waveform sequence is a waveform sequence of ON modulation symbols of on-off keying of the second part; The signal is sent within the first time unit.

2. The signal transmission method according to claim 1, characterized in that: The first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol in the first time unit; Alternatively, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols in the first time unit.

3. The signal transmission method according to claim 1, characterized in that: The signal is sent to the terminal, and is used to wake up the terminal to receive an idle state paging message or to receive connected state data.

4. The signal transmission method according to any one of claims 1 to 3, characterized in that: The method further comprises: Sending first information, wherein the first information indicates the first time unit information and indicates that signals within the first time unit are sent based on the same antenna port or antenna ports having a quasi-co-location relationship.

5. A signal transmission method, characterized in that: include: Receive a signal within a first time unit; wherein the signal includes a first part and a second part, the first waveform sequence and the second waveform sequence are the same, or the first waveform sequence and the second waveform sequence are dual, the first waveform sequence is a waveform sequence of ON modulation symbols of the first part, and the second waveform sequence is a waveform sequence of ON modulation symbols of the second part; The signal is demodulated.

6. The signal transmission method according to claim 5, characterized in that: The first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol; Alternatively, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols.

7. The signal transmission method according to claim 5 or 6, characterized in that: The demodulating the signal comprises: Merging signals of different segments in the first part and the second part to obtain a plurality of merged signals; Determining a target combined signal from the plurality of combined signals; The bit sequence corresponding to the target combined signal is determined as the demodulation result of the signal.

8. The signal transmission method according to any one of claims 5 to 7, characterized in that: The method further comprises: First information is received, wherein the first information indicates the first time unit information and indicates that signals within the first time unit are sent based on the same antenna port or antenna ports having a quasi-co-location relationship.

9. A signal transmission device, characterized in that: include: A processing module, configured to generate a signal within a first time unit, wherein the signal includes at least a first part and a second part, the first waveform sequence and the second waveform sequence are the same, or the first waveform sequence and the second waveform sequence are dual, the first waveform sequence is a waveform sequence of ON modulation symbols of on-off keying of the first part, and the second waveform sequence is a waveform sequence of ON modulation symbols of on-off keying of the second part; A transceiver module is used to send the signal within the first time unit.

10. The signal transmission device according to claim 9, characterized in that: The first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol in the first time unit; Alternatively, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols in the first time unit.

11. The signal transmission device according to claim 9, characterized in that: The signal is sent to the terminal, and is used to wake up the terminal to receive an idle state paging message or to receive connected state data.

12. The signal transmission device according to any one of claims 9 to 11, characterized in that: The transceiver module is further used to send first information, wherein the first information indicates the first time unit information and indicates that the signal within the first time unit is sent based on the same antenna port or an antenna port with a quasi-colocation relationship.

13. A signal transmission device, characterized in that: include: A transceiver module, configured to receive a signal within a first time unit; wherein the signal includes a first part and a second part, the first waveform sequence and the second waveform sequence are the same, or the first waveform sequence and the second waveform sequence are dual, the first waveform sequence is a waveform sequence of ON modulation symbols of the first part, and the second waveform sequence is a waveform sequence of ON modulation symbols of the second part; A processing module is used to demodulate the signal.

14. The signal transmission device according to claim 13, characterized in that: The first part and the second part are signals sent in the same orthogonal frequency division multiplexing symbol; Alternatively, the first part and the second part are signals sent in different orthogonal frequency division multiplexing symbols.

15. The signal transmission device according to claim 13 or 14, characterized in that: The processing module is specifically used for: Merging signals of different segments in the first part and the second part to obtain a plurality of merged signals; Determining a target combined signal from the plurality of combined signals; The bit sequence corresponding to the target combined signal is determined as the demodulation result of the signal.

16. The signal transmission device according to any one of claims 13 to 15, characterized in that: The transceiver module is further used to receive first information, wherein the first information indicates the first time unit information and indicates that the signal within the first time unit is sent based on the same antenna port or an antenna port with a quasi-co-location relationship.

17. A communication device, characterized in that: The communication device comprises a processor and a transceiver, and the processor and the transceiver are used to support the communication device to execute the method according to any one of claims 1-8.

18. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed, the method according to any one of claims 1 to 8 is executed.

Images